In my last post about dynamic pattern images , I showed how to create images on the fly for use as background pattern images. As promised, today I’ll show how to create composite images with cutouts using masks.
Tag Archives: CoreGraphics
The image handling capabilities available in iOS (and OS X for that matter) are pretty spectacular. Using only high level APIs, you can work with images quite easily. But lurking very close to the high level APIs is Core Graphics, where in the real power lies.
Despite what Apple’s Human Interface Guidelines may say, sometimes you want to prevent your user from doing anything until some long-running task (like a network API call or a login task, for example) completes. How do you do that without knowing, necessarily, what UI elements are visible and active? Use a full-screen veil to cover … Continue reading →